OpenGL Not Supported

Yeah i just recently got my CS back and running. My parents sent the CPU in for some upgrading, mainly for DSL. Now, i got CS working, but it says my video card does not support OpenGL. 3 months ago, I didnt have this problem. Its the same video card, same everything as far as I know, but no OpenGL. And we all know u cant play CS without openGL, it just plain sux. So, if someone could please tell me how to make my video card open GL compatible, I would appreciate it. Its a GF4 mx 440. Cheapy, but it works. Well, it used to.